David, you've asked the one question that has no single answer. Just about every brand on the market is used by someone on this forum, and they probably like it. To give you a quick answer, you'll probably find the more common brands include Maxima, Mobil 1 MX2T, Yamalube 2R and Silkolene. The most common ratio is probably 40:1, but many use 32:1 and some go up to around 50:1.
This might be a good opportunity to give the 'search' function a workout - I'd suggest using it on the KDX forum, and also the Basic Maintenance/Technology forums. Use search terms like 'premix', 'oil', 'ratio' and you should get several hundred threads that discuss the topic in great detail. Same search for transmission fluid will yield similar results for that question as well.
:thumb: